Happy Birthday, Jamie Lynn Spears!

Jamie Lynn Spears spends the eve of her 17th birthday shopping at department store JC Penney with her fiance and future baby-daddy Casey Aldridge in Mississippi on Thursday.

Clad in his dirty work boots and pants, Casey supposedly came back from a long day of construction work.

HAPPY BIRTHDAY, JAMIE LYNN!

Earlier in the same day, big sister Britney visited designer Christian Audigier‘s corporate office with her mom. Audigier is the designer of Ed Hardy, Christian Audigier, SMET, Paco Chicano, CbarA, and Crystal Rock. Brit Brit came to check out his new spring collection but mainly discussed business. She wants to work on a line with Christian!

Brit Brit even picked up presents for Jamie Lynn including Christian Audigier handbags, scarves, Ed Hardy bathing suit, Ed Hardy cologne and belts. Pictures below!